#3756B0#3756B0

#3756B0 is a mid, vivid blue. Relative luminance 0.106; OKLCH L 48.0% C 0.148 H 266.5°. Best body text is #FFFFFF at 6.73:1 contrast (WCAG AA passes).

Color values

HEX	#3756B0
RGB	rgb(55, 86, 176)
HSL	hsl(225, 52%, 45%)
HSV	hsv(225, 69%, 69%)
CMYK	cmyk(68.8%, 51.1%, 0%, 31%)
CIE-LAB	lab(38.90, 19.23, -51.44)
CIE-LCH	lch(38.90, 54.92, 290.49°)
OKLab	oklab(48.02% -0.0089 -0.1477)
OKLCH	oklch(48.02% 0.148 266.5)
XYZ	xyz(12.7371, 10.6011, 42.4409)
Luminance	0.1060 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3756B0 #B09137

analogous

#3792B0 #3756B0 #5437B0

triadic

#3756B0 #B03756 #56B037

tetradic

#3756B0 #B03792 #B09137 #37B054

square

#3756B0 #B03792 #B09137 #37B054

split-complementary

#3756B0 #B05437 #92B037

monochromatic

#1A2853 #283F81 #3756B0 #5976CB #889DDA

Accessibility & contrast

On white

6.73

#3756B0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.12

#3756B0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3756B0

6.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3756B0	#FFFFFF	#000000	##FFFFFF
##3756B0	1.00	6.73	3.12	6.73
#FFFFFF	6.73	1.00	21.00	1.00
#000000	3.12	21.00	1.00	21.00
##FFFFFF	6.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2161B3

Deuteranopia (green-blind)

#0056AE

Tritanopia (blue-blind)

#006B7B

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3756b0;
/* rgb */ color: rgb(55, 86, 176);
/* oklch */ color: oklch(48.0% 0.148 266.5);

Tailwind

colors: {
  custom: {
    50: '#7c85c8',
    500: '#3756b0',
    950: '#000000',
  },
}

SCSS

$custom: #3756b0;
$custom-light: #7c85c8;
$custom-dark: #000000;

JSON

{
  "hex": "#3756b0",
  "rgb": {
    "r": 55,
    "g": 86,
    "b": 176
  },
  "hsl": {
    "h": 224.628,
    "s": 52.381,
    "l": 45.294
  },
  "oklch": {
    "l": 0.48021,
    "c": 0.14795,
    "h": 266.5
  },
  "luminance": 0.10602
}

Semantic roles & 50–950 ramp

primary

#3756B0

secondary

#C4B27F

accent

#B74CDC

background

#F8F8FC

surface

#EFEFF8

border

#CACAD1

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #3756B0

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →